Due to the fact that the demand for red blood cells increases during pregnancy, what nutrient is needed regularly?

The correct answer is iron.

Explanation:

Iron is required to produce red blood cells, which transport oxygen all through the body. At the time of pregnancy, one requires more iron as the volume of the blood enhances and the development of baby's blood also takes place.  

In order to include more iron in the diet, one should comprise at least two servings of chicken, meat, legumes, fish, and nuts each day. One should consume cereals, whole-green bread, and green leafy vegetables regularly. In the case of certain women who are not able to get adequate amount of iron from the food, they need to get an iron supplement.  

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."